“…8,24 Additionally, nuclear pleomorphism, nuclear pseudoinclusions, 8,18,24 and binucleated or multinucleated cells have also been mentioned as being present in some of the reported cases. 8,9,23,24 Mitotic activity has been documented as being variable and, although some reports have mentioned that the tumor had high mitotic activity and the presence of atypical mitoses, [2][3][4][5]8 others have indicated that only rare or few mitoses were present. 11,13,14,21,24 In addition to the previously mentioned morphological features, some of the published reports have included other findings that, although uncommon, can also occur in deciduoid mesotheliomas.…”
Deciduoid mesothelioma is a rare variant of epithelioid mesothelioma that was initially considered to occur exclusively in the peritoneum of young women who had no history of asbestos exposure and to be characterized by an aggressive clinical course, but it was later demonstrated that this tumor could also occur in the pleura of older men and women who had been exposed to asbestos. Some subsequent studies have also indicated that the clinical course is no different from that of conventional epithelioid mesothelioma. Herein are reported 21 cases of deciduoid mesothelioma that were investigated using a large panel of immunohistochemical markers, 9 of which were also studied by electron microscopy. Fifteen of the patients were male and 6 were female (mean age, 60 years). Seventeen of the cases originated in the pleura and four in the peritoneum. Histologically, all of the cases were composed of large, polygonal or ovoid cells with well-defined cell borders, dense eosinophilic cytoplasm, and single or multiple nuclei. In some cases, the cells exhibited a wide variation in their size and shape, frequent loss of cell cohesion, marked nuclear atypia, and high mitotic activity (45 per 10 HPF); whereas, in others, the cells were more cohesive, less pleomorphic, and the mitotic activity low. As the survival of patients in the first group of cases was shorter (mean, 7 months), when compared with that of the latter (mean, 23 months), it is concluded that the differences in prognosis reported in deciduoid mesothelioma are due to the existence of a high-grade subgroup that presents highly aggressive clinical behavior. Therefore, when a high-grade deciduoid mesothelioma is present, it should be reported as it can significantly affect prognosis and treatment. The use of immunohistochemistry and electron microscopy in assisting in the differential diagnosis of deciduoid mesothelioma is also discussed.
“…8,24 Additionally, nuclear pleomorphism, nuclear pseudoinclusions, 8,18,24 and binucleated or multinucleated cells have also been mentioned as being present in some of the reported cases. 8,9,23,24 Mitotic activity has been documented as being variable and, although some reports have mentioned that the tumor had high mitotic activity and the presence of atypical mitoses, [2][3][4][5]8 others have indicated that only rare or few mitoses were present. 11,13,14,21,24 In addition to the previously mentioned morphological features, some of the published reports have included other findings that, although uncommon, can also occur in deciduoid mesotheliomas.…”
Deciduoid mesothelioma is a rare variant of epithelioid mesothelioma that was initially considered to occur exclusively in the peritoneum of young women who had no history of asbestos exposure and to be characterized by an aggressive clinical course, but it was later demonstrated that this tumor could also occur in the pleura of older men and women who had been exposed to asbestos. Some subsequent studies have also indicated that the clinical course is no different from that of conventional epithelioid mesothelioma. Herein are reported 21 cases of deciduoid mesothelioma that were investigated using a large panel of immunohistochemical markers, 9 of which were also studied by electron microscopy. Fifteen of the patients were male and 6 were female (mean age, 60 years). Seventeen of the cases originated in the pleura and four in the peritoneum. Histologically, all of the cases were composed of large, polygonal or ovoid cells with well-defined cell borders, dense eosinophilic cytoplasm, and single or multiple nuclei. In some cases, the cells exhibited a wide variation in their size and shape, frequent loss of cell cohesion, marked nuclear atypia, and high mitotic activity (45 per 10 HPF); whereas, in others, the cells were more cohesive, less pleomorphic, and the mitotic activity low. As the survival of patients in the first group of cases was shorter (mean, 7 months), when compared with that of the latter (mean, 23 months), it is concluded that the differences in prognosis reported in deciduoid mesothelioma are due to the existence of a high-grade subgroup that presents highly aggressive clinical behavior. Therefore, when a high-grade deciduoid mesothelioma is present, it should be reported as it can significantly affect prognosis and treatment. The use of immunohistochemistry and electron microscopy in assisting in the differential diagnosis of deciduoid mesothelioma is also discussed.
“…Although the original publication reported that malignant deciduoid mesothelioma arises most commonly in the peritoneum of young female cases, recent publications revealed that it may also occur in the pleura or pericardium of elderly male and female subjects, with or without asbestos exposure. [3][4][5][6][7][8][9][10][11][12] The pronounced anaplastic morphology of deciduoid mesothelioma requires differential diagnosis from other malignant tumors.…”
“…Talerman et al 1 em 1985 foram os primeiros a descrever os aspetos deciduóides do mesotelioma maligno no peritoneu de uma jovem de 13 anos. Em 1994, Nascimento et al 2 descreveram um caso de lesão peritoneal numa mulher jovem, com características morfológicas semelhantes às descritas por Talerman, designando-a de mesotelioma deciduóide.…”
Como citar este artigo: Santos C, et al.
Deciduoid Pleural Mesothelioma ---a Rare Entity in a Young WomanAbstract Deciduoid Mesothelioma is a rare variant of epithelioid mesothelioma; it was initially thought that it only occurred in the peritoneum of young women and had nothing to do with asbestos exposure. However, since these early findings it has also been observed in the pleura and the pericardium, with possible association to asbestos. In general the prognosis is poor compared to epithelioid mesothelioma. 45 cases have been reported in the literature up to now, 22 of these were located in the pleural cavity. The authors describe a case of deciduoid pleural mesothelioma in a 40-year-old-woman who presented with right pleuritic chest pain, with no history of asbestos exposure, treated with chemotherapy followed by surgery and who died postoperatively.
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